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Ventriglia G, Fakriadis I, Papadaki M, Zupa R, Pousis C, Mandalakis M, Corriero A, Mylonas CC. Effects of different hormonal treatments on spermatogenesis advancement in hatchery-produced greater amberjack Seriola dumerili (Risso 1810). Gen Comp Endocrinol 2024; 348:114447. [PMID: 38216096 DOI: 10.1016/j.ygcen.2024.114447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 12/14/2023] [Accepted: 01/05/2024] [Indexed: 01/14/2024]
Abstract
In earlier studies, wild-caught greater amberjack Seriola dumerili (Risso, 1810) males reared in sea cages showed gametogenesis impairment and low sperm production and quality. Here, we (a) examined if F1 hatchery-produced males reared in sea cages also exhibit reproductive dysfunctions and (b) evaluated the effects of gonadotropin releasing hormone agonist (GnRHa) administration through injections (GnRHainj) or sustained-release implants (GnRHaimpl), and human chorionic gonadotropin (hGC) injections on spermatogenesis/spermiation enhancement. Fish were given a hormone treatment just prior to the spawning season, and were transferred to land-based tanks, according to an established spawning induction protocol. Blood samples (n = 6) were obtained on Days 0, 7 and 13 after treatment. Testis samples were obtained on Days 0 (n = 4) and 13 (n = 2 per treatment). The fish prior to their transfer from the sea cages to the land-based tanks, exhibited a low gonadosomatic index, altered sex steroid hormone profile and high density of testicular apoptotic cells. After transfer to tanks, there was a general depression of sex steroid plasma levels parallel to an increase in cortisol concentrations. Despite the negative effect on steroidogenesis by the transfer from the sea, the hormonal treatments increased the number of fish from where sperm could be obtained, as well as testis growth, and reduced testicular apoptosis. Treatment with hCG resulted in the most significant changes in spermatogenesis, while GnRHaimpl appeared to induce less intense, but likely longer-lasting effects. The study indicated that F1 hatchery-produced males also exhibited reproductive dysfunctions as wild-caught captive-reared greater amberjack, and that the observed positive effects of the hormone treatments on spermiation/spermatogenesis were likely mediated by factors other than sex steroid hormones.
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Affiliation(s)
- G Ventriglia
- Department of Veterinary Medicine, University of Bari Aldo Moro, 70010 Valenzano (Bari), Italy
| | - I Fakriadis
- Institute of Marine Biology, Biotechnology and Aquaculture, Hellenic Centre for Marine Research, 71003 Heraklion, Crete, Greece
| | - M Papadaki
- Institute of Marine Biology, Biotechnology and Aquaculture, Hellenic Centre for Marine Research, 71003 Heraklion, Crete, Greece
| | - R Zupa
- Department of Veterinary Medicine, University of Bari Aldo Moro, 70010 Valenzano (Bari), Italy
| | - C Pousis
- Department of Veterinary Medicine, University of Bari Aldo Moro, 70010 Valenzano (Bari), Italy
| | - M Mandalakis
- Institute of Marine Biology, Biotechnology and Aquaculture, Hellenic Centre for Marine Research, 71003 Heraklion, Crete, Greece
| | - A Corriero
- Department of Veterinary Medicine, University of Bari Aldo Moro, 70010 Valenzano (Bari), Italy.
| | - C C Mylonas
- Institute of Marine Biology, Biotechnology and Aquaculture, Hellenic Centre for Marine Research, 71003 Heraklion, Crete, Greece
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Mahlangu J, Jiménez-Yuste V, Ventriglia G, Niggli M, Barlera S, Hermans C, Lehle M, Chowdary P, Jew L, Windyga J, Frenzel L, Schmitt C, Castaman G, Pipe SW. Long-term outcomes with emicizumab in hemophilia A without inhibitors: results from the HAVEN 3 and 4 studies. Res Pract Thromb Haemost 2024; 8:102364. [PMID: 38559572 PMCID: PMC10978536 DOI: 10.1016/j.rpth.2024.102364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Accepted: 02/14/2024] [Indexed: 04/04/2024] Open
Abstract
Background Emicizumab, a bispecific monoclonal antibody, bridges activated factor (F) IX and FX, mimicking the function of missing or deficient activated FVIII in people with hemophilia A (HA). Objectives To evaluate the long-term efficacy and safety of emicizumab prophylaxis in people with HA without FVIII inhibitors in the HAVEN 3 and 4 studies. Methods HAVEN 3 and 4 were phase 3 open-label studies. Participants received emicizumab maintenance doses of 1.5 mg/kg every week or 3 mg/kg every 2 weeks (HAVEN 3), or 6 mg/kg every 4 weeks (HAVEN 4). Long-term efficacy and safety were assessed. Results A total of 151 and 40 individuals without FVIII inhibitors received emicizumab in HAVEN 3 and 4, respectively. At the last patient, last visit dates (May 12, 2022 [HAVEN 3] and June 29, 2022 [HAVEN 4]), the median (range) duration of emicizumab exposure across the 2 studies was 248.1 (6.1-287.1) weeks. The mean (95% CI) annualized bleed rate for treated bleeds was 2.0 (0.23-7.15) for weeks 1 to 24, decreasing to 0.9 (0.01-5.28) by weeks 217 to 240. Overall, 188 (98.4%) participants experienced ≥1 adverse event (AE), with 185 treatment-related AEs in 71 (37.2%) participants. Forty-four (23.0%) participants reported a serious AE. Two thromboembolic events were reported, which were deemed unrelated to emicizumab by the investigator. No thrombotic microangiopathies were reported. Conclusion With nearly 5 years of emicizumab exposure across the HAVEN 3 and 4 studies in people with HA without inhibitors, these data indicate continued bleed control with no new safety signals observed during long-term follow-up.
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Affiliation(s)
- Johnny Mahlangu
- Faculty of Health Sciences, University of the Witwatersrand, National Health Laboratory Service, Johannesburg, South Africa
| | - Víctor Jiménez-Yuste
- Jefe de Servicio de Hematología, La Paz University Hospital-IdiPaz, Autónoma University, Madrid, Spain
| | - Giuliana Ventriglia
- Oncology and Hematology Product Development, F. Hoffmann-La Roche Ltd, Basel, Switzerland
| | - Markus Niggli
- Product Development Data Sciences, F. Hoffmann-La Roche Ltd, Basel, Switzerland
| | - Simona Barlera
- Department of Biometrics, Parexel International, Milan, Italy
| | - Cédric Hermans
- Haemostasis and Thrombosis Unit, Division of Haematology, Cliniques Universitaires Saint-Luc, Catholic University of Louvain, Brussels, Belgium
| | - Michaela Lehle
- Oncology and Hematology Product Development, F. Hoffmann-La Roche Ltd, Basel, Switzerland
| | - Pratima Chowdary
- Katharine Dormandy Haemophilia and Thrombosis Unit, Royal Free London, London, United Kingdom
| | - Lyle Jew
- Product Development Safety, Genentech, Inc. South San Francisco, California, USA
| | - Jerzy Windyga
- Department of Hemostasis Disorders and Internal Medicine, Laboratory of Hemostasis and Metabolic Diseases, Institute of Hematology and Transfusion Medicine, Warsaw, Poland
| | - Laurent Frenzel
- Department of Hematology, Necker-Enfants Malades Hospital, Paris, France
| | - Christophe Schmitt
- Department of Clinical Pharmacology, F. Hoffmann-La Roche Ltd, Basel, Switzerland
| | - Giancarlo Castaman
- Center for Bleeding Disorders and Coagulation, Careggi University Hospital, Florence, Italy
| | - Steven W. Pipe
- Departments of Pediatrics and Pathology, University of Michigan, Ann Arbor, Michigan, USA
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Hermans C, Ventriglia G, Obaji S, Beckermann BM, Lehle M, Catalani O, d’Oiron R, Frenzel L. Emicizumab use in females with moderate or mild hemophilia A without factor VIII inhibitors who warrant prophylaxis. Res Pract Thromb Haemost 2023; 7:102239. [PMID: 38193069 PMCID: PMC10772889 DOI: 10.1016/j.rpth.2023.102239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 09/14/2023] [Accepted: 10/16/2023] [Indexed: 01/10/2024] Open
Abstract
Background Hemophilia A (HA) is predominantly associated with males due to X-linked inheritance. Males and females with HA have shared unmet medical needs, highlighting the necessity for comprehensive care irrespective of sex. Objectives This analysis investigated the efficacy and safety of emicizumab prophylaxis in 3 females with HA. Methods HAVEN 6 (NCT04158648) is a phase III study of emicizumab in people with non-severe HA without factor (F)VIII inhibitors warranting prophylaxis per investigator assessment, and the study methodology has been reported previously. Female-specific endpoints included menstruation-related quality of life and menstruation heaviness. Results HAVEN 6 enrolled 3 females aged ≥18 years and within reproductive age (n = 2 mild HA; n = 1 moderate HA; n = 2 receiving prior FVIII prophylaxis; n = 1 receiving prior episodic FVIII). Participants presented with diverse bleeding phenotypes at baseline: 2 had no bleeds in the 24 weeks prior to enrollment, while 1 had an annualized bleed rate for all bleeds of 208.6. On-study annualized bleed rates for all bleeds were 0, 2.8, and 11.6, respectively. The 2 evaluable participants indicated improved menstruation-related quality of life vs baseline. Two participants experienced 3 grade 1/2 treatment-related adverse events; no new safety signals were identified. All 3 participants preferred emicizumab over their previous treatment and reported a better score for treatment burden and preoccupation domains of the Comprehensive Assessment Tool of Challenges in Hemophilia questionnaire. Conclusion Overall, results were consistent with those reported in the male population enrolled in the HAVEN 6 study, suggesting efficacy and a favorable safety profile for emicizumab in females with non-severe HA warranting prophylaxis.
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Affiliation(s)
- Cedric Hermans
- Division of Haematology, Cliniques Universitaires Saint-Luc, Université Catholique de Louvain (UCLouvain), Brussels, Belgium
| | - Giuliana Ventriglia
- Product Development Clinical Science Hematology, F. Hoffmann-La Roche Ltd, Basel, Switzerland
| | - Samya Obaji
- Cardiff Haemophilia Centre, University Hospital of Wales, Cardiff, United Kingdom
| | - Benjamin M. Beckermann
- Product Development Clinical Science Oncology & Hematology, F. Hoffmann-La Roche Ltd, Basel, Switzerland
| | - Michaela Lehle
- Product Development Clinical Science Oncology & Hematology, F. Hoffmann-La Roche Ltd, Basel, Switzerland
| | | | - Roseline d’Oiron
- Reference centre for Haemophilia and Rare Congenital Bleeding Disorders, Bicêtre Hospital AP-HP, University of Paris-Saclay and UMR-S1176 INSERM, Le Kremlin-Bicêtre, France
| | - Laurent Frenzel
- Centre de Traitement de l'Hémophilie, AP-HP, Hôpital Necker Enfants Malades, Paris, France
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Sassi G, Licata G, Ventriglia G, Wouters A, Lemaitre P, Seurinck R, Mori A, Grieco GE, Bissenova S, Ellis D, Caluwaerts S, Rottiers P, Vandamme N, Mathieu C, Dotta F, Gysemans C, Sebastiani G. A Plasma miR-193b-365 Signature Combined With Age and Glycemic Status Predicts Response to Lactococcus lactis-Based Antigen-Specific Immunotherapy in New-Onset Type 1 Diabetes. Diabetes 2023; 72:1470-1482. [PMID: 37494666 PMCID: PMC10545562 DOI: 10.2337/db22-0852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Accepted: 07/10/2023] [Indexed: 07/28/2023]
Abstract
Immunomodulation combined with antigen therapy holds great promise to arrest autoimmune type 1 diabetes, but clinical translation is hampered by a lack of prognostic biomarkers. Low-dose anti-CD3 plus Lactococcus lactis bacteria secreting proinsulin and IL-10 reversed new-onset disease in nonobese diabetic (NOD) mice, yet some mice were resistant to the therapy. Using miRNA profiling, six miRNAs (i.e., miR-34a-5p, miR-125a-3p, miR-193b-3p, miR-328, miR-365-3p, and miR-671-3p) were identified as differentially expressed in plasma of responder versus nonresponder mice before study entry. After validation and stratification in an independent cohort, plasma miR-193b-3p and miR-365-3p, combined with age and glycemic status at study entry, had the best power to predict, with high sensitivity and specificity, poor response to the therapy. These miRNAs were highly abundant in pancreas-infiltrating neutrophils and basophils with a proinflammatory and activated phenotype. Here, a set of miRNAs and disease-associated parameters are presented as a predictive signature for the L. lactis-based immunotherapy outcome in new-onset type 1 diabetes, hence allowing targeted recruitment of trial participants and accelerated trial execution. ARTICLE HIGHLIGHTS Low-dose anti-CD3 combined with oral gavage of genetically modified Lactococcus lactis bacteria secreting human proinsulin and IL-10 holds great promise to arrest autoimmune type 1 diabetes, but the absence of biomarkers predicting therapeutic success hampers clinical translation. A set of cell-free circulation miRNAs together with age and glycemia at baseline predicts a poor response after L. lactis-based immunotherapy in nonobese mice with new-onset diabetes. Pancreas-infiltrating neutrophils and basophils are identified as potential cellular sources of discovered miRNAs. The prognostic signature could guide targeted recruitment of patients with newly diagnosed type 1 diabetes in clinical trials with the L. lactis-based immunotherapy.
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Affiliation(s)
- Gabriele Sassi
- Clinical and Experimental Endocrinology, Chrometa, KU Leuven, Leuven, Belgium
| | - Giada Licata
- Diabetes Unit, Department of Medicine, Surgery and Neurosciences, University of Siena, Siena, Italy
- Fondazione Umberto Di Mario ONLUS, Toscana Life Science, Siena, Italy
| | - Giuliana Ventriglia
- Diabetes Unit, Department of Medicine, Surgery and Neurosciences, University of Siena, Siena, Italy
- Fondazione Umberto Di Mario ONLUS, Toscana Life Science, Siena, Italy
| | - Amber Wouters
- Clinical and Experimental Endocrinology, Chrometa, KU Leuven, Leuven, Belgium
| | - Pierre Lemaitre
- Clinical and Experimental Endocrinology, Chrometa, KU Leuven, Leuven, Belgium
| | - Ruth Seurinck
- Data Mining and Modelling for Biomedicine, VIB Center for Inflammation Research, Ghent, Belgium
- Department of Applied Mathematics, Computer Science and Statistics, Ghent University, Ghent, Belgium
| | - Alessia Mori
- Tuscany Centre for Precision Medicine, Siena, Italy
| | - Giuseppina Emanuela Grieco
- Diabetes Unit, Department of Medicine, Surgery and Neurosciences, University of Siena, Siena, Italy
- Fondazione Umberto Di Mario ONLUS, Toscana Life Science, Siena, Italy
| | - Samal Bissenova
- Clinical and Experimental Endocrinology, Chrometa, KU Leuven, Leuven, Belgium
| | - Darcy Ellis
- Clinical and Experimental Endocrinology, Chrometa, KU Leuven, Leuven, Belgium
| | | | | | - Niels Vandamme
- Data Mining and Modelling for Biomedicine, VIB Center for Inflammation Research, Ghent, Belgium
- VIB Single Cell Core, Leuven–Ghent, Ghent, Belgium
| | - Chantal Mathieu
- Clinical and Experimental Endocrinology, Chrometa, KU Leuven, Leuven, Belgium
| | - Francesco Dotta
- Diabetes Unit, Department of Medicine, Surgery and Neurosciences, University of Siena, Siena, Italy
- Fondazione Umberto Di Mario ONLUS, Toscana Life Science, Siena, Italy
- Tuscany Centre for Precision Medicine, Siena, Italy
| | - Conny Gysemans
- Clinical and Experimental Endocrinology, Chrometa, KU Leuven, Leuven, Belgium
| | - Guido Sebastiani
- Diabetes Unit, Department of Medicine, Surgery and Neurosciences, University of Siena, Siena, Italy
- Fondazione Umberto Di Mario ONLUS, Toscana Life Science, Siena, Italy
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Négrier C, Mahlangu J, Lehle M, Chowdary P, Catalani O, Bernardi RJ, Jiménez-Yuste V, Beckermann BM, Schmitt C, Ventriglia G, Windyga J, d'Oiron R, Moorehead P, Koparkar S, Teodoro V, Shapiro AD, Oldenburg J, Hermans C. Emicizumab in people with moderate or mild haemophilia A (HAVEN 6): a multicentre, open-label, single-arm, phase 3 study. Lancet Haematol 2023; 10:e168-e177. [PMID: 36716761 DOI: 10.1016/s2352-3026(22)00377-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 11/25/2022] [Accepted: 11/28/2022] [Indexed: 01/30/2023]
Abstract
BACKGROUND Clinical trial data are scarce for the use of prophylaxis in people with non-severe haemophilia A. The HAVEN 6 study aims to assess safety and efficacy of emicizumab prophylaxis in people with non-severe haemophilia A without factor VIII (FVIII) inhibitors. METHODS HAVEN 6 is a multicentre, open-label, single-arm, phase 3 study taking place in 22 specialty clinics and hospitals in Europe, North America, and South Africa. Eligible participants were people of all ages weighing at least 3 kg with a diagnosis of moderate (FVIII activity ≥1%-≤5%) or mild (FVIII >5%-<40%) haemophilia A without FVIII inhibitors requiring prophylaxis as assessed by the treating physician. Participants received subcutaneous emicizumab 3 mg/kg of bodyweight once weekly for 4 weeks, followed by the participant's choice of maintenance dose: 1·5 mg/kg once weekly, 3 mg/kg every 2 weeks, or 6 mg/kg every 4 weeks. Safety was the primary objective of the study. Safety endpoints included adverse events, serious adverse events, and adverse events of special interest including thromboembolic events and thrombotic microangiopathies. The primary efficacy endpoint was the annualised bleed rate for treated bleeds. Analyses were done for participants who received at least one dose of emicizumab. This study is registered with ClinicalTrials.gov, number NCT04158648, and is active but not recruiting. FINDINGS Between Feb 10, 2020, and Aug 31, 2021, we assigned 73 people to treatment. 72 participants received at least one dose of emicizumab (51 moderate [71%]; 21 mild [29%]; 69 male [96%]; three female [4%]; and 61 White [85%]). Median age was 23·5 years (IQR 12·0-36·0); median follow-up was 55·6 weeks (IQR 52·3-61·6) weeks. At baseline, 24 participants (33%) had target joints and 37 (51%) were receiving FVIII prophylaxis. 60 participants (83%) had at least one adverse event; the most common adverse events were headache (in 12 participants [17%]), injection-site reaction (12 [17%]), and arthralgia (11 [15%]). 15 (21%) had at least one emicizumab-related adverse event; no adverse events led to treatment withdrawal, modification, or interruption. Eight participants (11%) reported ten serious adverse events in total, none emicizumab-related. There were no deaths or thrombotic microangiopathies. One participant had grade 1 thrombosed haemorrhoids (classified as a thromboembolic event), unrelated to emicizumab. The annualised bleed rate was 0·9 (95% CI 0·55-1·52) for treated bleeds. 48 participants (67%) had no treated bleeds. All-bleed annualised bleed rates were 10·1 (95% CI 6·93-14·76) from 24 weeks pre-study and 2·3 (1·67-3·12) on-study after a median follow-up of 55·6 weeks. INTERPRETATION These data show efficacy and a favourable safety profile of emicizumab in people with non-severe haemophilia A without FVIII inhibitors who warrant prophylaxis, confirming emicizumab as a valuable treatment option in this population. FUNDING F Hoffmann-La Roche.
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Affiliation(s)
| | - Johnny Mahlangu
- University of the Witwatersrand and NHLS, Johannesburg, South Africa
| | | | - Pratima Chowdary
- Katharine Dormandy Haemophilia and Thrombosis Centre, Royal Free London, London, UK
| | | | | | | | | | | | | | - Jerzy Windyga
- Department of Hemostasis Disorders and Internal Medicine, Laboratory of Hemostasis and Metabolic Diseases, Institute of Hematology and Transfusion Medicine, Warsaw, Poland
| | - Roseline d'Oiron
- Bicêtre Hospital AP-HP, University of Paris-Saclay and UMR_S1176 INSERM, Le Kremlin-Bicêtre, Paris, France
| | - Paul Moorehead
- Memorial University of Newfoundland, St John's, NL, Canada
| | | | | | - Amy D Shapiro
- Indiana Hemophilia and Thrombosis Center, Indianapolis, IN, USA
| | - Johannes Oldenburg
- Institute of Experimental Haematology and Transfusion Medicine, University of Bonn, Bonn, Germany
| | - Cedric Hermans
- University Clinic of Saint Luke, Catholic University of Louvain, Brussels, Belgium
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Cook DP, Cunha JPMCM, Martens PJ, Sassi G, Mancarella F, Ventriglia G, Sebastiani G, Vanherwegen AS, Atkinson MA, Van Huynegem K, Steidler L, Caluwaerts S, Rottiers P, Teyton L, Dotta F, Gysemans C, Mathieu C. Intestinal Delivery of Proinsulin and IL-10 via Lactococcus lactis Combined With Low-Dose Anti-CD3 Restores Tolerance Outside the Window of Acute Type 1 Diabetes Diagnosis. Front Immunol 2020; 11:1103. [PMID: 32582188 PMCID: PMC7295939 DOI: 10.3389/fimmu.2020.01103] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Accepted: 05/06/2020] [Indexed: 01/07/2023] Open
Abstract
A combination treatment (CT) of proinsulin and IL-10 orally delivered via genetically modified Lactococcus lactis bacteria combined with low-dose anti-CD3 (aCD3) therapy successfully restores glucose homeostasis in newly diagnosed non-obese diabetic (NOD) mice. Tolerance is accompanied by the accumulation of Foxp3+ regulatory T cells (Tregs) in the pancreas. To test the potential of this therapy outside the window of acute diabetes diagnosis, we substituted autoimmune diabetic mice, with disease duration varying between 4 and 53 days, with syngeneic islets at the time of therapy initiation. Untreated islet recipients consistently showed disease recurrence after 8.2 ± 0.7 days, while 32% of aCD3-treated and 48% of CT-treated mice remained normoglycemic until 6 weeks after therapy initiation (P < 0.001 vs. untreated controls for both treatments, P < 0.05 CT vs. aCD3 therapy). However, mice that were diabetic for more than 2 weeks before treatment initiation were less efficient at maintaining normoglycemia than those treated within 2 weeks of diabetes diagnosis, particularly in the aCD3-treated group. The complete elimination of endogenous beta cell mass with alloxan at the time of diabetes diagnosis pointed toward the significance of continuous feeding of the islet antigen proinsulin at the time of aCD3 therapy for treatment success. The CT providing proinsulin protected 69% of mice, compared to 33% when an irrelevant antigen (ovalbumin) was combined with aCD3 therapy, or to 27% with aCD3 therapy alone. Sustained tolerance was accompanied with a reduction of IGRP+CD8+ autoreactive T cells and an increase in insulin-reactive (InsB12-20 or InsB13-2) Foxp3+CD4+ Tregs, with a specific accumulation of Foxp3+ Tregs around the insulin-containing islet grafts after CT with proinsulin. The combination of proinsulin and IL-10 via oral Lactococcus lactis with low-dose aCD3 therapy can restore tolerance to beta cells in autoimmune diabetic mice, also when therapy is started outside the window of acute diabetes diagnosis, providing persistence of insulin-containing islets or prolonged beta cell function.
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Affiliation(s)
- Dana P Cook
- Clinical and Experimental Endocrinology (CEE), Department of Chronic Diseases, Metabolism and Ageing, Campus Gasthuisberg O&N 1, Katholieke Universiteit Leuven (KU Leuven), Leuven, Belgium
| | - João Paulo Monteiro Carvalho Mori Cunha
- Clinical and Experimental Endocrinology (CEE), Department of Chronic Diseases, Metabolism and Ageing, Campus Gasthuisberg O&N 1, Katholieke Universiteit Leuven (KU Leuven), Leuven, Belgium
| | - Pieter-Jan Martens
- Clinical and Experimental Endocrinology (CEE), Department of Chronic Diseases, Metabolism and Ageing, Campus Gasthuisberg O&N 1, Katholieke Universiteit Leuven (KU Leuven), Leuven, Belgium
| | - Gabriele Sassi
- Clinical and Experimental Endocrinology (CEE), Department of Chronic Diseases, Metabolism and Ageing, Campus Gasthuisberg O&N 1, Katholieke Universiteit Leuven (KU Leuven), Leuven, Belgium
| | - Francesca Mancarella
- Diabetes Unit, Department of Medicine, Surgery and Neurosciences, University of Siena and Fondazione Umberto Di Mario ONLUS-Toscana Life Science Park, Siena, Italy
| | - Giuliana Ventriglia
- Diabetes Unit, Department of Medicine, Surgery and Neurosciences, University of Siena and Fondazione Umberto Di Mario ONLUS-Toscana Life Science Park, Siena, Italy
| | - Guido Sebastiani
- Diabetes Unit, Department of Medicine, Surgery and Neurosciences, University of Siena and Fondazione Umberto Di Mario ONLUS-Toscana Life Science Park, Siena, Italy
| | - An-Sofie Vanherwegen
- Clinical and Experimental Endocrinology (CEE), Department of Chronic Diseases, Metabolism and Ageing, Campus Gasthuisberg O&N 1, Katholieke Universiteit Leuven (KU Leuven), Leuven, Belgium
| | - Mark A Atkinson
- Immunology and Laboratory Medicine, Department of Pathology, College of Medicine, University of Florida Diabetes Institute, Gainesville, FL, United States
| | | | | | | | | | - Luc Teyton
- The Teyton Lab, Department of Immunology and Microbiology, Scripps Research Institute, La Jolla, CA, United States
| | - Francesco Dotta
- Diabetes Unit, Department of Medicine, Surgery and Neurosciences, University of Siena and Fondazione Umberto Di Mario ONLUS-Toscana Life Science Park, Siena, Italy
| | - Conny Gysemans
- Clinical and Experimental Endocrinology (CEE), Department of Chronic Diseases, Metabolism and Ageing, Campus Gasthuisberg O&N 1, Katholieke Universiteit Leuven (KU Leuven), Leuven, Belgium
| | - Chantal Mathieu
- Clinical and Experimental Endocrinology (CEE), Department of Chronic Diseases, Metabolism and Ageing, Campus Gasthuisberg O&N 1, Katholieke Universiteit Leuven (KU Leuven), Leuven, Belgium
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7
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Ventriglia G, Mancarella F, Sebastiani G, Cook DP, Mallone R, Mathieu C, Gysemans C, Dotta F. miR-409-3p is reduced in plasma and islet immune infiltrates of NOD diabetic mice and is differentially expressed in people with type 1 diabetes. Diabetologia 2020; 63:124-136. [PMID: 31659408 DOI: 10.1007/s00125-019-05026-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Accepted: 08/30/2019] [Indexed: 02/07/2023]
Abstract
AIMS/HYPOTHESIS MicroRNAs (miRNAs) are a novel class of potential biomarkers emerging in many diseases, including type 1 diabetes. Here, we aim to analyse a panel of circulating miRNAs in non-obese diabetic (NOD) mice and individuals with type 1 diabetes. METHODS We adopted standardised methodologies for extracting miRNAs from small sample volumes to evaluate a profiling panel of mature miRNAs in paired plasma and laser-captured microdissected immune-infiltrated islets of recently diabetic and normoglycaemic NOD mice. Moreover, we validated the findings during disease progression and remission after anti-CD3 therapy in NOD mice, as well as in individuals with type 1 diabetes. RESULTS Plasma levels of five miRNAs were downregulated in diabetic vs normoglycaemic mice. Of those, miR-409-3p was also downregulated in situ in the immune islet infiltrates of diabetic mice, suggesting an association with disease pathogenesis. Target-prediction tools linked miR-409-3p to immune- and metabolism-related signalling molecules. In situ miR-409-3p expression correlated with insulitis severity, and CD8+ central memory T cells were found to be enriched in miR-409-3p. Plasma miR-409-3p levels gradually decreased during diabetes development and improved with disease remission after anti-CD3 antibody therapy. Finally, plasma miR-409-3p levels were lower in people recently diagnosed with type 1 diabetes compared with a non-diabetic control group, and levels were inversely correlated with HbA1c levels. CONCLUSIONS/INTERPRETATION We propose that miR-409-3p may represent a new circulating biomarker of islet inflammation and type 1 diabetes severity.
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Affiliation(s)
- Giuliana Ventriglia
- Diabetes Unit, Department of Medicine, Surgery and Neurosciences, University of Siena, V.le Bracci, 16 - 53100, Siena, Italy
- Fondazione Umberto Di Mario ONLUS c/o Toscana Life Sciences, Siena, Italy
- Clinical and Experimental Endocrinology (CEE), Katholieke Universiteit Leuven (KU LEUVEN), Leuven, Belgium
| | - Francesca Mancarella
- Diabetes Unit, Department of Medicine, Surgery and Neurosciences, University of Siena, V.le Bracci, 16 - 53100, Siena, Italy
- Fondazione Umberto Di Mario ONLUS c/o Toscana Life Sciences, Siena, Italy
| | - Guido Sebastiani
- Diabetes Unit, Department of Medicine, Surgery and Neurosciences, University of Siena, V.le Bracci, 16 - 53100, Siena, Italy
- Fondazione Umberto Di Mario ONLUS c/o Toscana Life Sciences, Siena, Italy
| | - Dana P Cook
- Clinical and Experimental Endocrinology (CEE), Katholieke Universiteit Leuven (KU LEUVEN), Leuven, Belgium
| | - Roberto Mallone
- Inserm, U1016, CNRS, UMR8104, Paris Descartes University, Sorbonne Paris Cité, Cochin Institute, Paris, France
| | - Chantal Mathieu
- Clinical and Experimental Endocrinology (CEE), Katholieke Universiteit Leuven (KU LEUVEN), Leuven, Belgium
| | - Conny Gysemans
- Clinical and Experimental Endocrinology (CEE), Katholieke Universiteit Leuven (KU LEUVEN), Leuven, Belgium
| | - Francesco Dotta
- Diabetes Unit, Department of Medicine, Surgery and Neurosciences, University of Siena, V.le Bracci, 16 - 53100, Siena, Italy.
- Fondazione Umberto Di Mario ONLUS c/o Toscana Life Sciences, Siena, Italy.
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8
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Grieco GE, Cataldo D, Ceccarelli E, Nigi L, Catalano G, Brusco N, Mancarella F, Ventriglia G, Fondelli C, Guarino E, Crisci I, Sebastiani G, Dotta F. Serum Levels of miR-148a and miR-21-5p Are Increased in Type 1 Diabetic Patients and Correlated with Markers of Bone Strength and Metabolism. Noncoding RNA 2018; 4:ncrna4040037. [PMID: 30486455 PMCID: PMC6315714 DOI: 10.3390/ncrna4040037] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Revised: 11/16/2018] [Accepted: 11/22/2018] [Indexed: 12/13/2022] Open
Abstract
Type 1 diabetes (T1D) is characterized by bone loss and altered bone remodeling, resulting into reduction of bone mineral density (BMD) and increased risk of fractures. Identification of specific biomarkers and/or causative factors of diabetic bone fragility is of fundamental importance for an early detection of such alterations and to envisage appropriate therapeutic interventions. MicroRNAs (miRNAs) are small non-coding RNAs which negatively regulate genes expression. Of note, miRNAs can be secreted in biological fluids through their association with different cellular components and, in such context, they may represent both candidate biomarkers and/or mediators of bone metabolism alterations. Here, we aimed at identifying miRNAs differentially expressed in serum of T1D patients and potentially involved in bone loss in type 1 diabetes. We selected six miRNAs previously associated with T1D and bone metabolism: miR-21; miR-24; miR-27a; miR-148a; miR-214; and miR-375. Selected miRNAs were analyzed in sera of 15 T1D patients (age: 33.57 ± 8.17; BMI: 21.4 ± 1.65) and 14 non-diabetic subjects (age: 31.7 ± 8.2; BMI: 24.6 ± 4.34). Calcium, osteocalcin, parathormone (PTH), bone ALkaline Phoshatase (bALP), and Vitamin D (VitD) as well as main parameters of bone health were measured in each patient. We observed an increased expression of miR-148a (p = 0.012) and miR-21-5p (p = 0.034) in sera of T1D patients vs. non-diabetic subjects. The correlation analysis between miRNAs expression and the main parameters of bone metabolism, showed a correlation between miR-148a and Bone Mineral Density (BMD) total body (TB) values (p = 0.042) and PTH circulating levels (p = 0.033) and the association of miR-21-5p to Bone Mineral Content-Femur (BMC-FEM). Finally, miR-148a and miR-21-5p target genes prediction analysis revealed several factors involved in bone development and remodeling, such as MAFB, WNT1, TGFB2, STAT3, or PDCD4, and the co-modulation of common pathways involved in bone homeostasis thus potentially assigning a role to both miR-148a and miR-21-5p in bone metabolism alterations. In conclusion, these results lead us to hypothesize a potential role for miR-148a and miR-21-5p in bone remodeling, thus representing potential biomarkers of bone fragility in T1D.
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Affiliation(s)
- Giuseppina E Grieco
- Department of Medicine, Surgery and Neurosciences, University of Siena, Siena, 53100, Italy.
- Fondazione Umberto Di Mario ONLUS c/o Toscana Life Science, Siena, 53100, Italy.
| | - Dorica Cataldo
- UOC Diabetologia, Azienda Ospedaliera Universitaria Senese, Siena, 53100, Italy.
| | - Elena Ceccarelli
- Department of Medicine, Surgery and Neurosciences, University of Siena, Siena, 53100, Italy.
| | - Laura Nigi
- Department of Medicine, Surgery and Neurosciences, University of Siena, Siena, 53100, Italy.
- Fondazione Umberto Di Mario ONLUS c/o Toscana Life Science, Siena, 53100, Italy.
| | - Giovanna Catalano
- Department of Medicine, Surgery and Neurosciences, University of Siena, Siena, 53100, Italy.
| | - Noemi Brusco
- Department of Medicine, Surgery and Neurosciences, University of Siena, Siena, 53100, Italy.
- Fondazione Umberto Di Mario ONLUS c/o Toscana Life Science, Siena, 53100, Italy.
| | - Francesca Mancarella
- Department of Medicine, Surgery and Neurosciences, University of Siena, Siena, 53100, Italy.
- Fondazione Umberto Di Mario ONLUS c/o Toscana Life Science, Siena, 53100, Italy.
| | - Giuliana Ventriglia
- Department of Medicine, Surgery and Neurosciences, University of Siena, Siena, 53100, Italy.
- Fondazione Umberto Di Mario ONLUS c/o Toscana Life Science, Siena, 53100, Italy.
| | - Cecilia Fondelli
- UOC Diabetologia, Azienda Ospedaliera Universitaria Senese, Siena, 53100, Italy.
| | - Elisa Guarino
- UOC Diabetologia, Azienda Ospedaliera Universitaria Senese, Siena, 53100, Italy.
| | - Isabella Crisci
- UOC Diabetologia, Azienda Ospedaliera Universitaria Senese, Siena, 53100, Italy.
| | - Guido Sebastiani
- Department of Medicine, Surgery and Neurosciences, University of Siena, Siena, 53100, Italy.
- Fondazione Umberto Di Mario ONLUS c/o Toscana Life Science, Siena, 53100, Italy.
| | - Francesco Dotta
- Department of Medicine, Surgery and Neurosciences, University of Siena, Siena, 53100, Italy.
- Fondazione Umberto Di Mario ONLUS c/o Toscana Life Science, Siena, 53100, Italy.
- UOC Diabetologia, Azienda Ospedaliera Universitaria Senese, Siena, 53100, Italy.
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Abstract
PURPOSE OF REVIEW We discuss current knowledge about microRNAs (miRNAs) in type 1 diabetes (T1D), an autoimmune disease leading to severe loss of pancreatic β-cells. We describe: the role of cellular miRNAs in regulating immune functions and pathways impacting insulin secretion and β-cell survival; circulating miRNAs as disease biomarkers. RECENT FINDINGS Studies examined miRNAs in experimental models and patients, including analysis of tissues from organ donors, peripheral blood cells, and circulating miRNAs in serum, plasma, and exosomes. Studies employed diverse designs and methodologies to detect miRNAs and measure their levels. Selected miRNAs have been linked to the regulation of key biological pathways and disease pathogenesis; several circulating miRNAs are associated with having T1D, islet autoimmunity, disease progression, and immune and metabolic functions, for example, C-peptide secretion, in multiple studies. SUMMARY A growing literature reveals multiple roles of miRNAs in T1D, provide new clues into the regulation of disease mechanisms, and identify reproducible associations. Yet challenges remain, and the field will benefit from joint efforts to analyze results, compare methodologies, formally test the robustness of miRNA associations, and ultimately move towards validating robust miRNA biomarkers.
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Affiliation(s)
- Francesco Dotta
- Diabetes Unit, Department of Medicine, Surgery and Neuroscience, University of Siena
- Fondazione Umberto di Mario, Toscana Life Sciences, Siena, Italy
| | - Giuliana Ventriglia
- Diabetes Unit, Department of Medicine, Surgery and Neuroscience, University of Siena
- Fondazione Umberto di Mario, Toscana Life Sciences, Siena, Italy
| | | | - Alberto Pugliese
- Diabetes Research Institute
- Department of Medicine, Division of Endocrinology and Metabolism
- Department of Microbiology and Immunology, Leonard Miller School of Medicine, University of Miami, Miami, Florida, USA
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Sebastiani G, Nigi L, Grieco GE, Mancarella F, Ventriglia G, Dotta F. Circulating microRNAs and diabetes mellitus: a novel tool for disease prediction, diagnosis, and staging? J Endocrinol Invest 2017; 40:591-610. [PMID: 28213644 DOI: 10.1007/s40618-017-0611-4] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Accepted: 01/03/2017] [Indexed: 12/19/2022]
Abstract
Diabetes is a complex, multifactorial group of metabolic diseases characterized by chronic hyperglycaemia due to pancreatic beta-cell dysfunction and/or loss. It is characterized by an asymptomatic and highly variable prodromic phase, which renders diabetes mellitus difficult to be predicted with sufficient accuracy. Despite several efforts in the identification and standardization of newly trustable. Biomarkers able to predict and follow-up diabetes and to specifically subtype its different forms, few of them have proven of clinical utility. Recently, a new class of endogenous non-coding small RNAs, namely microRNAs, have been indicated as putative biomarkers, being released by cells and tissues and found in a cell-free circulating form in many biological fluids, including serum and/or plasma. MicroRNAs have been initially identified as promising biomarkers in cancer, and nowadays their application has been extended to other diseases, including diabetes. Although an increasing number of studies focused on the evaluation of circulating microRNAs in diabetes, few reproducibly identified microRNAs as biomarkers for disease prediction or follow-up. Technological problems as well as the need to obtain highly standardized operating procedures and methods are still an issue in such research field. In this review, we comprehensively resume the main and most recent findings on circulating microRNAs, and their possible use as biomarkers to predict and follow-up diabetes and its complications, as well as the methodological challenges to standardize accurate operating procedures for their analysis.
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Affiliation(s)
- G Sebastiani
- Diabetes Unit, Department of Medicine, Surgery and Neuroscience, University of Siena, Siena, Italy
- Fondazione Umberto di Mario ONLUS, Toscana Life Sciences, Siena, Italy
| | - L Nigi
- Diabetes Unit, Department of Medicine, Surgery and Neuroscience, University of Siena, Siena, Italy
- Fondazione Umberto di Mario ONLUS, Toscana Life Sciences, Siena, Italy
| | - G E Grieco
- Diabetes Unit, Department of Medicine, Surgery and Neuroscience, University of Siena, Siena, Italy
- Fondazione Umberto di Mario ONLUS, Toscana Life Sciences, Siena, Italy
| | - F Mancarella
- Diabetes Unit, Department of Medicine, Surgery and Neuroscience, University of Siena, Siena, Italy
- Fondazione Umberto di Mario ONLUS, Toscana Life Sciences, Siena, Italy
| | - G Ventriglia
- Diabetes Unit, Department of Medicine, Surgery and Neuroscience, University of Siena, Siena, Italy
- Fondazione Umberto di Mario ONLUS, Toscana Life Sciences, Siena, Italy
| | - F Dotta
- Diabetes Unit, Department of Medicine, Surgery and Neuroscience, University of Siena, Siena, Italy.
- Fondazione Umberto di Mario ONLUS, Toscana Life Sciences, Siena, Italy.
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11
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Sebastiani G, Valentini M, Grieco GE, Ventriglia G, Nigi L, Mancarella F, Pellegrini S, Martino G, Sordi V, Piemonti L, Dotta F. MicroRNA expression profiles of human iPSCs differentiation into insulin-producing cells. Acta Diabetol 2017; 54:265-281. [PMID: 28039581 DOI: 10.1007/s00592-016-0955-9] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Accepted: 12/15/2016] [Indexed: 01/10/2023]
Abstract
AIMS MicroRNAs are a class of small noncoding RNAs, which control gene expression by inhibition of mRNA translation. MicroRNAs are involved in the control of biological processes including cell differentiation. Here, we aim at characterizing microRNA expression profiles during differentiation of human induced pluripotent stem cells (hiPSCs) into insulin-producing cells. METHODS We differentiated hiPSCs toward endocrine pancreatic lineage following a 18-day protocol. We analyzed genes and microRNA expression levels using RT real-time PCR and TaqMan microRNA arrays followed by bioinformatic functional analysis. RESULTS MicroRNA expression profiles analysis of undifferentiated hiPSCs during pancreatic differentiation revealed that 347/768 microRNAs were expressed at least in one time point of all samples. We observed 18 microRNAs differentially expressed: 11 were upregulated (miR-9-5p, miR-9-3p, miR-10a, miR-99a-3p, miR-124a, miR-135a, miR-138, miR-149, miR-211, miR-342-3p and miR-375) and 7 downregulated (miR-31, miR-127, miR-143, miR-302c-3p, miR-373, miR-518b and miR-520c-3p) during differentiation into insulin-producing cells. Selected microRNAs were further evaluated during differentiation of Sendai-virus-reprogrammed hiPSCs using an improved endocrine pancreatic beta cell derivation protocol and, moreover, in differentiated NKX6.1+ sorted cells. Following Targetscan7.0 analysis of target genes of differentially expressed microRNAs and gene ontology classification, we found that such target genes belong to categories of major significance in pancreas organogenesis and development or exocytosis. CONCLUSIONS We detected a specific hiPSCs microRNAs signature during differentiation into insulin-producing cells and demonstrated that differentially expressed microRNAs target several genes involved in pancreas organogenesis.
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Affiliation(s)
- Guido Sebastiani
- Diabetes Unit, Department of Medicine, Surgery and Neuroscience, University of Siena, Siena, Italy
- Fondazione Umberto di Mario ONLUS, Toscana Life Sciences, Siena, Italy
| | - Marco Valentini
- Diabetes Unit, Department of Medicine, Surgery and Neuroscience, University of Siena, Siena, Italy
- Fondazione Umberto di Mario ONLUS, Toscana Life Sciences, Siena, Italy
| | - Giuseppina Emanuela Grieco
- Diabetes Unit, Department of Medicine, Surgery and Neuroscience, University of Siena, Siena, Italy
- Fondazione Umberto di Mario ONLUS, Toscana Life Sciences, Siena, Italy
| | - Giuliana Ventriglia
- Diabetes Unit, Department of Medicine, Surgery and Neuroscience, University of Siena, Siena, Italy
- Fondazione Umberto di Mario ONLUS, Toscana Life Sciences, Siena, Italy
| | - Laura Nigi
- Diabetes Unit, Department of Medicine, Surgery and Neuroscience, University of Siena, Siena, Italy
- Fondazione Umberto di Mario ONLUS, Toscana Life Sciences, Siena, Italy
| | - Francesca Mancarella
- Diabetes Unit, Department of Medicine, Surgery and Neuroscience, University of Siena, Siena, Italy
- Fondazione Umberto di Mario ONLUS, Toscana Life Sciences, Siena, Italy
| | - Silvia Pellegrini
- Diabetes Research Institute, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Gianvito Martino
- Division of Neuroscience, Institute of Experimental Neurology (INSpe), IRCCS San Raffaele Hospital, Milan, Italy
| | - Valeria Sordi
- Diabetes Research Institute, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Lorenzo Piemonti
- Diabetes Research Institute, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Francesco Dotta
- Diabetes Unit, Department of Medicine, Surgery and Neuroscience, University of Siena, Siena, Italy.
- Fondazione Umberto di Mario ONLUS, Toscana Life Sciences, Siena, Italy.
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12
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Silenzi A, Poscia A, Kheiraoui F, Scarpocchi A, Garcia Delgado MP, Mercati M, Ventriglia G, Zizza R, Ricciardi W, Boccia S. Self-reported lifestyle changes in pharmacy customers: 'Ci sta a cuore il tuo cuore' 1-year follow-up. Eur J Public Health 2016. [DOI: 10.1093/eurpub/ckw170.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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13
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Kheiraoui F, Poscia A, Silenzi A, Scarpocchi A, Garcia Delgado MP, Mercati M, Ventriglia G, Zizza R, Avolio M, Ricciardi W. 10-Year Risk Estimation for T2DM in Italy and Spain: Results from a community pharmacy-based project. Eur J Public Health 2015. [DOI: 10.1093/eurpub/ckv172.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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14
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Sebastiani G, Po A, Miele E, Ventriglia G, Ceccarelli E, Bugliani M, Marselli L, Marchetti P, Gulino A, Ferretti E, Dotta F. MicroRNA-124a is hyperexpressed in type 2 diabetic human pancreatic islets and negatively regulates insulin secretion. Acta Diabetol 2015; 52:523-30. [PMID: 25408296 DOI: 10.1007/s00592-014-0675-y] [Citation(s) in RCA: 102] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2014] [Accepted: 10/24/2014] [Indexed: 11/27/2022]
Abstract
AIMS MicroRNAs are a class of negative regulators of gene expression, which have been shown to be involved in the development of endocrine pancreas and in the regulation of insulin secretion. Since type 2 diabetes (T2D) is characterized by beta cell dysfunction, we aimed at evaluating expression levels of miR-124a and miR-375, both involved in the control of beta cell function, in human pancreatic islets obtained from T2D and from age-matched non-diabetic organ donors. METHODS We analyzed miR-124a and miR-375 expression by real-time qRT-PCR in human pancreatic islets and evaluated the potential role of miR-124a by overexpressing or silencing such miRNA in MIN6 pseudoislets. RESULTS We identified a major miR-124a hyperexpression in T2D human pancreatic islets with no differential expression of miR-375. Of note, miR-124a overexpression in MIN6 pseudoislets resulted in an impaired glucose-induced insulin secretion. In addition, miR-124a silencing in MIN6 pseudoislets resulted in increased expression of predicted target genes (Mtpn, Foxa2, Flot2, Akt3, Sirt1 and NeuroD1) involved in beta cell function. For Mtpn and Foxa2, we further demonstrated the actual binding of miR-124a to their 3UTR sequences by luciferase assay. CONCLUSIONS We uncovered a major hyperexpression of miR-124a in T2D islets, whose silencing resulted in increased expression of target genes of major importance for beta cell function and whose overexpression impaired glucose-stimulated insulin secretion, leading to the hypothesis that an altered miR-124a expression may contribute to beta cell dysfunction in type 2 diabetes.
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Affiliation(s)
- Guido Sebastiani
- Fondazione Umberto Di Mario ONLUS, c/o Toscana Life Science Park, Siena, Italy,
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15
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Avolio M, Poscia A, Kheiraoui F, Scarpocchi A, Mercati M, Ventriglia G, Zizza R, Ricciardi W. Can pharmacy get healthier hearts? Results following a two years community based cardiovascular risk screening programme. Eur J Public Health 2014. [DOI: 10.1093/eurpub/cku165.036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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16
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Tocci G, Ferrucci A, Guida P, Corsini A, Avogaro A, Comaschi M, Cortese C, Giorda CB, Manzato E, Medea G, Mureddu GF, Titta G, Ventriglia G, Riccardi G, Zito GB, Volpe M. Global cardiovascular risk management in different Italian regions: an analysis of the Evaluation of Final Feasible Effect of Control Training and Ultra Sensitisation (EFFECTUS) educational program. Nutr Metab Cardiovasc Dis 2012; 22:635-642. [PMID: 21186104 DOI: 10.1016/j.numecd.2010.10.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/25/2010] [Revised: 10/03/2010] [Accepted: 10/12/2010] [Indexed: 10/18/2022]
Abstract
BACKGROUND AND AIM The Final Evaluation Feasible Effect of Ultra Control Training and Sensitization (EFFECTUS) is an educational program, aimed at improving global CV risk stratification and management in Italy. The present study evaluates differences on clinical approach to global CV risk among physicians involved in the EFFECTUS program and stratified in three geographical macro-areas (North, Center, South) of our Country. METHODS AND RESULTS Physicians were asked to submit data already available in their medical records, covering the first 10 adult outpatients, consecutively seen in the month of May 2006. Overall, 1.078 physicians (27% females, aged 50 ± 7 years) collected data of 9.904 outpatients (46.5% females, aged 67 ± 9 years), among which 3.219 (32.5%) were residents in Northern, 3.652 (36.9%) in Central and 3.033 (30.6%) in Southern Italy. A significantly higher prevalence of major CV risk factors, including obesity, physical inactivity, hypertension and diabetes, was recorded in Southern than in other areas. Accordingly, Southern physicians more frequently prescribed antihypertensive, glucose and lipid lowering agents than other physicians, who paid significantly more attention to life-style changes in their clinical practice. CONCLUSIONS This analysis of the EFFECTUS study demonstrates a high prevalence of CV risk factors in Italy, particularly in Southern areas, and indicates some important discrepancies in the clinical management of global CV risk among physcians working in different Italian regions.
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Affiliation(s)
- G Tocci
- Chair and Division of Cardiology, II Faculty of Medicine, University Sapienza, Sant'Andrea Hospital, Rome, Italy
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17
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Tocci G, Ferrucci A, Guida P, Avogaro A, Comaschi M, Corsini A, Cortese C, Giorda CB, Manzato E, Medea G, Mureddu GF, Riccardi G, Titta G, Ventriglia G, Zito GB, Volpe M. Impact of physicians' age on the clinical management of global cardiovascular risk: analysis of the results of the Evaluation of Final Feasible Effect of Control Training and Ultra Sensitisation Educational Programme. Int J Clin Pract 2011; 65:649-57. [PMID: 21564436 DOI: 10.1111/j.1742-1241.2011.02664.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
AIM To evaluate the potential impact of physicians' age on global cardiovascular (CV) risk management in the population of the Evaluation of Final Feasible Effect of Ultra Control Training and Sensitisation (EFFECTUS) study. METHODS Involved physicians were stratified into three age groups (≤ 45, 46-55 and > 55 years), and asked to provide clinical data covering the first 10 adult outpatients, consecutively seen in May 2006. RESULTS Overall 1078 physicians, among whom 219 (20%) were aged ≤ 45, 658 (61%) between 46 and 55, and 201 (19%) > 55 years, collected data of 9904 outpatients (46.5% female patients, aged 67 ± 9 years), who were distributed into three corresponding groups: 2010 (20%), 6111 (62%) and 1783 (18%), respectively. A higher prevalence of myocardial infarction and stroke was recorded by younger physicians rather than those aged > 46 years. Older physicians frequently recommended life-style changes, whereas a higher number of antihypertensive, antiplatelet, glucose and lipid-lowering prescriptions was prescribed by physicians aged ≤ 45 years. CONCLUSIONS This analysis of the EFFECTUS study indicates a higher prevalence of vascular diseases among outpatients who were followed by younger physicians, who prescribed a higher number of CV drugs than older physicians. These older physicians have more attitude for prescribing favourable life-style changes than younger physicians.
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Affiliation(s)
- G Tocci
- Division of Cardiology, Department of Clinical and Molecular Medicine, Faculty of Medicine, University Sapienza, Sant'Andrea Hospital, Rome, Italy
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Arrighi S, Ventriglia G, Aralla M, Zizza S, Di Summa A, Desantis S. Absorptive activities of the efferent ducts evaluated by the immunolocalization of aquaporin water channels and lectin histochemistry in adult cats. Histol Histopathol 2010; 25:433-44. [PMID: 20183796 DOI: 10.14670/hh-25.433] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Ultrastructural and biochemical features of efferent ducts (EDs) are indicative of an intense absorptive activity towards the luminal fluid. This function was investigated by 1) the immunohistochemical localization of different aquaporins, integral membrane water channels that facilitate rapid passive movement of water, and 2) the histochemical localization of lectins, known to have specific affinity for glycoconjugate residues. AQP1 was mostly revealed at the apical surface and adluminal cytoplasm of non-ciliated cells and to a minor extent in their lateral plasma membrane, whereas it was absent in ciliated cells. Blood vessels showed AQP1-immunoreactivity, which was present in endothelial cells of venous vessels and capillaries and around the muscular sheath of arteries. AQP9 was expressed in the apical zone of ciliated and non-ciliated cells and in the lateral cell membrane. AQP2 and AQP5 were undetectable. Lectin histochemistry showed that non-ciliated cells contain glycans with terminal Neu5Acalpha2,3Galbeta1,3GalNAc, Neu5Acalpha2,3Galbeta1,4GlcNAc, Galbeta1,4GlcNAc, GalNAc (s-PNA, MAL II, RCA120, SBA reactivity) and with internal/terminal alphaMan (Con A affinity) at the luminal surface and the apical region. In addition, non-ciliated cells expressed oligosaccharides terminating with GalNAc and Neu5Acalpha2,6Gal/GalNAc (SNA reactivity) in the luminal surface and the apical zone, respectively. Ciliated cells revealed glycoconjugates only on cilia, which showed terminal Neu5Acalpha2,3Galbeta1,4GlcNAc (s-RCA120 staining) and GalNAc, as well as internal/terminal alphaMan and GlcNAc (s-WGA, GSA II staining). Data provide evidence for the involvement of different pathways in the bulk reabsorption of water and low molecular weight solutes by the non-ciliated cell of the cat EDs. AQP-mediated trans-cellular route can be hypothesized, together with fluid phase endocytosis mediated by the glycocalix and a well-developed endocytotic apparatus. Epithelial ciliated cells, whose main function is the movement of luminal content, might also participate in absorptive processes to a lesser extent.
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Affiliation(s)
- S Arrighi
- Department of Veterinary Science and Technologies for Food Safety, Faculty of Veterinary Medicine, Università degli Studi di Milano, 20134 Milano, Italy.
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Desantis S, Ventriglia G, Zizza S, Nicassio M, Valentini L, Di Summa A, Lacalandra GM. Lectin-binding sites on ejaculated stallion sperm during breeding and non-breeding periods. Theriogenology 2010; 73:1146-53. [PMID: 20172596 DOI: 10.1016/j.theriogenology.2009.12.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2009] [Revised: 12/17/2009] [Accepted: 12/27/2009] [Indexed: 11/28/2022]
Abstract
Stallion sperm from semen collected in Southern Italy during the breeding (June-July) and non-breeding (December-January) periods were analyzed by means of twelve lectins to evaluate the glycoconjugate pattern and to verify whether there are any seasonal differences in the glycosylation pattern of the sperm glycocalyx. The acrosomal cap showed reactivity for Maackia amurensis (MAL II), Sambucus nigra (SNA), Arachis hypogaea (PNA), Glycine max (SBA), Helix pomatia (HPA), Canavalia ensiformis (Con A) Triticum vulgaris (WGA), and Griffonia simplicifolia isolectin II (GSA II) in breeding and non-breeding ejaculated sperm, suggesting the presence of oligosaccharides terminating with Neu5Ac alpha 2,3Gal beta 1,4GlcNAc, Neu5Ac alpha 2,6Gal/GalNAc, with Gal beta 1,3GalNAc, alpha/beta GalNAc and glycans with terminal/internal alpha Man and GlcNAc. During the non-breeding period, the acrosomal cap expressed oligosaccharides terminating with Gal beta 1,4GlcNAc (Ricinus communis(120) affinity) (RCA(120)) and L-Fuc alpha 1,2Gal beta 1,4GlcNAc beta (Ulex europaeus affinity) (UEA I). The equatorial segment placed between the acrosomal cap and post-acrosomal region did not display glycans terminating with GalNAc, GlcNAc, and alpha L-Fuc. The post-acrosomal region of sperm collected in the breeding and non-breeding periods bound Con A, MAL II, SNA, and SBA, thus showing the presence of N-linked oligosaccharides from high-Man content, terminating with Neu5Ac alpha 2,3Gal beta 1,4GlcNAc, Neu5Ac alpha 2,6Gal/GalNAc and GalNAc. In winter, the post-acrosomal region also expressed oligosaccharides terminating with alpha GalNAc, GlcNAc, and L-Fuc alpha 1,2Gal beta 1,4GlcNAc beta (HPA, GSA II, and UEA I staining). The tail of sperm from semen collected during the breeding and non-breeding periods showed a lectin binding pattern similar to the post-acrosomal region, except for the absence of HPA staining in sperm collected during the winter season. These results indicate that the surface of stallion sperm contains different glycocalyx domains and that the glycosylation pattern undergoes changes during the breeding and non-breeding periods.
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Affiliation(s)
- S Desantis
- Department of Animal Health and Well-being, Faculty of Veterinary Medicine, University of Bari, Italy.
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Palmieri G, Acone F, Desantis S, Corriero A, Ventriglia G, Addis P, Genovese S, Aprea A, Spedicato D, Losurdo M, Deflorio M, Di Summa A, De Metrio G. Brain morphology and immunohistochemical localization of the gonadotropin-releasing hormone in the bluefin tuna, Thunnus thynnus. Eur J Histochem 2009; 52:19-28. [DOI: 10.4081/1182] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Desantis S, Ventriglia G, Zizza S, De Santis T, Di Summa A, De Metrio G, Dell’Aquila M. Lectin-binding sites in isolated equine cumulus-oocyte complexes: Differential expression of glycosidic residues in complexes recovered with compact or expanded cumulus. Theriogenology 2009; 72:300-9. [DOI: 10.1016/j.theriogenology.2009.01.025] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2008] [Revised: 01/26/2009] [Accepted: 01/31/2009] [Indexed: 11/26/2022]
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Desantis S, Acone F, Corriero A, Deflorio M, Zubani D, Ventriglia G, Palmieri G, De Metrio G. Distribution of sialoglycoconjugates in the oviductal isthmus of the horse during anoestrus, oestrus and pregnancy: a lectin histochemistry study. Eur J Histochem 2009; 48:403-12. [PMID: 15718207 DOI: 10.4081/914] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
The distribution of sialic acid residues as well as other glycosidic sugars has been investigated in the horse oviductal isthmus during anoestrus, oestrus and pregnancy by means of lectin and pre-lectin methods. Ciliated cells and non-ciliated (secretory) cells exhibited different lectin binding profiles that were found to change during the investigated stages. Ciliated cells did not show any reactivity in the basal cytoplasm, while the supra-nuclear cytoplasm displayed a few of oligosaccharides with terminal and internal alphamannose (Man) and/or alphaglucose (Glc) during oestrus and pregnancy and a moderate presence of oligosaccharides terminating in alphafucose (Fuc) during oestrus; cilia exhibited a more complex glycoconjugate pattern for the presence of oligosaccharides terminating in N-acetylgalactosamine (GalNAc), GalNAcalpha1,3 GalNAcalpha1,3galactose(Gal)beta1,4Galbeta1,4N-acetylglucosamine(GlcNAc), Fuc, sialic acid (Neu5Ac)-aGalNAc belonging or not to the GalNAca1,3GalNAca1,3 Galb1,4 Galb1, 4GlcNAc sequence, and. alphaGalNAc and Neu5Aca 2,6Gal/GalNAc increased during oestrus. Cilia displayed terminal Galbeta1,3 GalNAc in pregnancy, terminal alphaGal in anoestrus and pregnancy and terminal or internal D-GlcNAc during anoestrus and pregnancy, respectively. The whole cytoplasm of non-ciliated cells showed oligosaccharides terminating with alphaGalNAc, Neu5Aca2,6Gal/GalNAc, Neu5Ac GalNAca 1,3GalNAcalpha1,3Galbeta1,4Galbeta1,4GlcNAc during the investigated stages, as well as GlcNAc in anoestrus and pregnancy. The supra-nuclear zone of non-ciliated cells exhibited oligosaccharides with terminal Galbeta1,4GlcNAc and internal Man during oestrus and pregnancy as well as terminal alphaGal and Fuc in oestrus and Neu5Ac-Galbeta1,3GalNAc in pregnancy. The luminal surface of non-ciliated cells showed glycans terminating with alphaGalNAc and/or Neu5Ac GalNAcalpha1,3 GalNAcalpha1,3Galbeta1,4Galbeta1,4GlcNAc in all specimens, oligosaccharides with terminal Galbeta1,4GlcNAc and internal Man during oestrus and pregnancy, Neu5Ac alpha2,6Gal/GalNAc in anoestrus and oestrus, and glycans terminating with Galbeta1,3GalNAc, Neu5A acalpha2,3 Galbeta1, 4GlcNac, Neu5ac-Galbeta1,3GalNAc, Neu5Ac-Galbeta1,4 GlcNAc in pregnancy. These findings show the presence of sialoglycoconjugates in the oviductal isthmus of the mare as well as the existence of great modifications in the glycoconjugates linked to different physiological conditions.
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Affiliation(s)
- S Desantis
- Dept. of Animal Health and Well-being, Faculty of Veterinary Medicine, University of Bari, Italy
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Corriero A, Acone F, Desantis S, Zubani D, Deflorio M, Ventriglia G, Bridges CR, Labate M, Palmieri G, McAllister BG, Kime DE, De Metrio G. Histological and immunohistochemical investigation on ovarian development and plasma estradiol levels in the swordfish (Xiphias gladius L.). Eur J Histochem 2009; 48:413-22. [PMID: 15718208 DOI: 10.4081/915] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
The paper reports a histological and immunohistochemical description of oocyte growth and ultrastructural aspects of zona radiata (ZR) formation as well as the relationship between plasma estradiol-17beta, (E2) levels and ovarian development in swordfish (Xiphias gladius L.) from the Mediterranean Sea. Ovaries were inactive during March to mid April; maturation occurred during late April to June and spawning in June and July. Zona radiata formation starts, as Pas positive material, in oocytes at the lipid stage. In this stage a deposit of electrondense material between oolemma and follicular cells appears. In the cortical alveoli stage and through the early vitellogenic stage, the deposition of a moderately electrondense material occurred on the inner side of the ZR. Finally, in late vitellogenic oocytes a third layer, made of microfibrillar material, appeared. The immunohistochemical analyses revealed that the initial internalisation of hepatic zona radiata proteins (Zrp) in the swordfish oocyte starts before the uptake of vitellogenin (Vtg) and that it is associated with the low previtellogenic E2 plasma levels, while a significant E2 increase in plasma is associated with the beginning of Vtg uptake. This would appear to confirm the hypothesis that the differential and sequential induction of zonagenesis and vitellogenesis may reflect a general feature of teleost oogenesis.
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Affiliation(s)
- A Corriero
- Department of Animal Health and Well-being, University of Bari, Valenzano (BA), Italy
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Desantis S, Albrizio M, Ventriglia G, Deflorio M, Guaricci AC, Minoia R, De Metrio G. The presence of the mu-opioid receptor in the isthmus of mare oviduct. Histol Histopathol 2008; 23:555-64. [PMID: 18283640 DOI: 10.14670/hh-23.555] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The presence of the mu-opioid receptor and the type of glycosylation in the third extra-cellular loop of this receptor was investigated in the isthmus of mare oviduct during oestrus by means of immunoblotting and immunohistochemistry combined with enzymatic (N-glycosidase F and O-glycosidase) and chemical (beta-elimination) treatments. Immunoblotting analysis showed that the mu-opioid receptor consists of two peptides with molecular weights of around 65 and 50 kDa. After N-deglycosylation with N-glycosidase F an additional immunoreactive peptide was observed at around 30 KDa. The cleavage of O-glycans by O-glycosidase failed in immunoblotting as well as in immunohistochemistry investigations, revealing that the third extra-cellular loop of the mu-opioid receptor expressed in mare isthmus oviduct contains some modifications of the Galbeta(1-3)GalNAc core binding to serine or threonine. Immunohistochemistry revealed the mu-opioid receptor in the mucosal epithelium, some stromal cells, muscle cells and blood vessels. In ciliated cells the mu-opioid receptor showed N-linked glycans, since the immunoreactivity was abolished after N-glycosidase F treatment, whereas it was preserved in the apical region after beta-elimination. Most non-ciliated cells expressed the mu-opioid receptor with both N- and O-linked oligosaccharides, as revealed by the abolition of immunostaining after N-glycosidase F and beta-elimination. Stromal cells, endothelial and muscle cells of blood vessels expressed the mu-opioid receptor containing both N- and O-linked oligosaccharides. Myosalpinx myocytes expressed the mu-opioid receptor with O-linked oligosaccharides. The immunopositive myocytes formed a circular coat in the intrinsic musculature, whereas they were arranged in some isolated, oblique bundles in the extrinsic musculature. In conclusion, the mu-opioid receptor could have a role in the production and the movement of isthmus lumen content that contributes to ensuring the effective condition of the sperm in the mare oviduct.
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Affiliation(s)
- S Desantis
- Department of Animal Health and Well-being, Faculty of Veterinary Medicine, University of Bari, Italy.
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Desantis S, Ventriglia G, Zubani D, Deflorio M, Megalofonou P, Acone F, Zarrilli A, Palmieri G, De Metrio G. Histochemical analysis of glycoconjugates in the domestic cat testis. Histol Histopathol 2005; 21:11-22. [PMID: 16267783 DOI: 10.14670/hh-21.11] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The localization and characterization of oligosaccharide sequences in the cat testis was investigated using 12 lectins in combination with the beta-elimination reaction, N-Glycosidase F and sialidase digestion. Leydig cells expressed O-linked glycans with terminal alphaGalNAc (HPA reactivity) and N-glycans with terminal/internal alphaMan (Con A affinity). The basement membrane showed terminal Neu5Acalpha2,6Gal/GalNAc, Galbeta1,3GalNAc, alpha/betaGalNAc, and GlcNAc (SNA, PNA, HPA, SBA, GSA II reactivity) in O-linked oligosaccharides, terminal Galbeta1,4GlcNAc (RCA120 staining) and alphaMan in N-linked oligosaccharides; in addition, terminal Neu5acalpha2,3Galbeta1,4GlcNac, Forssman pentasaccharide, alphaGal, alphaL-Fuc and internal GlcNAc (MAL II, DBA, GSA I-B4, UEA I, KOH-sialidase-WGA affinity) formed both O- and N-linked oligosaccharides. The Sertoli cells cytoplasm contained terminal Neu5Ac-Galbeta1,4GlcNAc, Neu5Ac-betaGalNAc as well as internal GlcNAc in O-linked glycans, alphaMan in N-linked glycoproteins and terminal Neu5Acalpha2,6Gal/ GalNAc in both O- and N-linked oligosaccharides. Spermatogonia exhibited cytoplasmic N-linked glycoproteins with alphaMan residues. The spermatocytes cytoplasm expressed terminal Neu5Acalpha2,3Galbeta1,4 GlcNAc and Galbeta1,3GalNAc in O-linked oligosaccharides, terminal Galbeta1,4GlcNAc and alpha/betaGalNAc in N-linked glycoconjugates. The Golgi region showed terminal Neu5Acalpha2,3Galbeta1,4GlcNac, Galbeta1,4GlcNAc, Forssman pentasaccharide, and alphaGalNAc in O-linked oligosaccharides, alphaMan and terminal betaGal in N-linked oligosaccharides. The acrosomes of Golgi-phase spermatids expressed terminal Galbeta1,3GalNAc, Galbeta1,4GlcNAc, Forssmann pentasaccharide, alpha/betaGalNAc, alphaGal and internal GlcNAc in O-linked oligosaccharides, terminal alpha/betaGalNAc, alphaGal and terminal/internal alphaMan in N-linked glycoproteins. The acrosomes of cap-phase spermatids lacked internal Forssman pentasaccharide and alphaGal, while having increased alpha/betaGalNAc. The acrosomes of elongated spermatids did not show terminal Galbeta1,3GalNAc, displayed terminal Galbeta1,4GlcNAc and alpha/betaGalNAc in N-glycans and Neu5Ac-Galbeta1,3GalNAc in O-linked oligosaccharides.
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Affiliation(s)
- S Desantis
- Department of Animal Health and Well-being, Faculty of Veterinary Medicine, University of Bari, Italy
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Desantis S, Ventriglia G, Zubani D, Corriero A, Deflorio M, Acone F, Palmieri G, De Metrio G. Differential lectin binding patterns in the oviductal ampulla of the horse during oestrus. Eur J Histochem 2005; 49:139-49. [PMID: 15967742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2023] Open
Abstract
We investigated the oligosaccharide sequence of glycoconjugates, mainly sialoglycoconjugates, in the horse oviductal ampulla during oestrus by means of lectin and pre-lectin methods such as the KOH-neuraminidase procedure to remove sialic acid residues and incubation with N-glycosidase F to cleave N-linked glycans. Ciliated cells displayed N-linked oligosaccharides throughout the cytoplasm. The cilia glycocalyx expressed both N- and O-linked (mucin-type) oligosaccharides, both showing a high variety of terminal sequences. In the most non-ciliated cells, the whole cytoplasm contained N-linked oligosaccharides with terminal alphaGal as well as mucin-type glycans with terminal Forssman pentasaccharides. In a few scattered non-ciliated cells, the whole cytoplasm displayed sialylated N-linked oligosaccharides with terminal Neu5Ac-GalNAc and O-linked glycans terminating with neutral and/or alphaGalNAc, Neu5Ac alpha2,6Gal/GalNAc, Neu5AcGal beta1,3GalNAc. Supra-nuclear granules, probably Golgi zones, of non-ciliated cells showed mainly O-linked glycans rich in sialic acid residues. The luminal surface of non-ciliated cells showed N-linked oligosaccharides, containing terminal/internal alphaMan/alphaGlc, betaGlcNAc and terminal alphaGal, as well as mucin-type oligosaccharides terminating with a large variety of either neutral saccharides or sialylated sequences. Apical protrusions containing O-linked oligosaccharides with terminal Forssman pentasaccharide, Neu5Ac-Gal beta1,4GlcNAc, Neu5Ac-GalNAc were seen in non-ciliated cells scattered along the epithelium. These findings show the presence of sialoglycoconjugates in the oviductal ampulla epithelium of the mare and the existence of different lectin binding profiles between ciliated and non-ciliated (secretory) cells, as well as the presence of non-ciliated cell sub-types which might determine functional differences along the ampullary epithelium of mare oviduct.
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Affiliation(s)
- S Desantis
- Department of Animal Health and Well-being, Faculty of Veterinary Medicine, University of Bari, Italy
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Corrente M, Greco G, Madio A, Ventriglia G. Methicillin resistance in staphylococci isolated from subclinical mastitis in sheep. New Microbiol 2003; 26:39-45. [PMID: 12578310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
One hundred ovine milk samples were subjected to bacteriological analysis to detect staphylococci. Twenty-four staphylococcal strains isolated were characterised for methicillin resistance with disk diffusion test (DDT) after incubation at 24 and 48 h, oxacillin agar screen test, Minimal Inhibitory Concentration (MIC), nitrocefin test for beta-lactamase production and PCR for the mecA gene. Nine staphylococcal strains resulted resistant in DDT; some differences in the halo diameter at double incubation period were noted; eight of these strains were resistant in MIC test; just one strain was positive to oxacillin agar screen test. All strains were mecA negative by PCR and positive by nitrocefin test. On the basis of these results methicillin-resistant strains can be classified as beta-lactamase hyperproducers.
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Affiliation(s)
- M Corrente
- Department of Health and Animal Well-being, Faculty of Veterinary Medicine of Bari, Valenzano, Italy
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Ferrara F, Pezcoller C, Saviano MS, Ricchi E, Botticelli A, Laganà G, Radatti A, Ventriglia G, Carriero A, De Donatis V. [Suture materials in tracheobronchial surgery]. MINERVA CHIR 1984; 39:1643-57. [PMID: 6531113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Volpe M, Trimarco B, Ricciardelli B, Rengo F, Chiariello M, Cuocolo A, Ventriglia G, Veniero AM, Condorelli M. [Effects of salt loading on the response to isoproterenol in normal and hypertensive subjects]. Cardiologia 1982; 27:453-461. [PMID: 6765440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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